Using Rebar for Concrete Deck Footings
Plain concrete deck foundations without rebar are acceptable under the minimum standards of construction established in the International Residential Code. However, placing reinforcing steel within footings is a relatively easy and inexpensive practice that can provide increased performance. Footings with large bearing areas or unstable soil can benefit from adding rebar to prevent cracking.
When rebar is placed within a footing, it should be completely encased in concrete by a minimum of 3 inches on all sides. When rebar is allowed to project out of the footings, it is susceptible to more rapid corrosion. Over time, rebar allowed to corrode into the footing can weaken the footing, creating areas subject to cracking.
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Cutting a Concrete Pad
Learn how to use a concrete saw to cut a hole in a patio slab to install a deck footing.
Prevent Deck Sinking
Sinking deck footings can lead to serious problems. Learn what can cause concrete footings to sink. Properly installed footings will resist sinking.
Protecting From Collapse
Learn how to use cardboard sonotubes and hole covers to protect your deck footing holes from caving in and flooding before pouring concrete.
How to Decorate Deck Support Columns
Browse some examples of decorative deck support posts for tall decks.
Deck Blocking: Bridging, Spacing, Methods, and How to Install Like a Pro
Learn the importance of deck blocking and how to install it when building your deck.
Beam Span Chart
Learn how to size your deck beam using this easy-to-use span table. Just cross-reference the post spacing and joist length to determine the beam size.
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How many footings do I need?
Learn how to determine the number of footings and support posts you need for your deck when designing your deck frame.
Retaining Walls
Avoid problems related to digging deck footings near retaining walls. Learn some tips from the pros for how to handle these difficult situations.
How to Install & Build Deck Footings
Learn how to install concrete footings to properly support your deck. Watch our step-by-step foundations video.
Why is Joist Protection so Important for Your Deck?
If you’ve ever seen a piece of wood left out in the weather for any period of time, you know what happens: decay. Whether through wet rot, insect damage, or mildew, the fibers begin to break down.
Engineered Deck Beam
Use treated engineered deck beams for long spans with fewer posts and footings. Engineered beams can be designed and specially ordered from your lumberyard.
Building Your Deck For A Hot Tub
Learn how to build a deck to properly support a hot tub or spa. Hot tubs are very heavy. Never place a hot tub on a deck that wasn't designed for the additional load.
Explore Articles by Topic
Footings
Information related to installing frost footings for decks
Framing
Learn structural framing methods
Decking
Learn about wood and composite decking materials
Stairs
An in-depth look at the complex issue of how to build stairs
Railings
How to install guardrails and handrails to meet IRC code
Features
An overview on water drainage, benches, planters and lights
Design
The basics of deck design
Planning
Learn about permits and working with contractors
Porches & Patios
Build a covered deck to enjoy all seasons
Ledger
Proper attachment techniques
Care
Maintain your deck to maintain your investment
Materials
An overview on water drainage, benches, planters and lights